what you mean by saying haploid content of human dna is 3.3*109 base pairs?
Humans are diploid which mean they have two sets of each chromosome. Humans thus have 23 pairs of chromosome. The haploid content is 23 chromosomes. So, by saying haploid content of human DNA is 3.3x109 base pairs, one means that 23 chromosomes of human have this much DNA.